I use sand papers, not scratch patterns, 5 X - easy to polish. However I would think that the diamonds I get from Stone Care Central will work fine. I've noticed that they don't leave scratch patterns on lower grits.

--- On Tue, 9/21/10, Stuart Young <santafefc@sbcglobal.net> wrote:

From: Stuart Young <santafefc@sbcglobal.net>
Subject: [sccpartners] onyx countertops
To: "Restoration and Maintenance" <sccpartners@stoneandtilepros.com>
Date: Tuesday, September 21, 2010, 8:00 PM

To everyone,
 
I just looked at some onyx countertops which have become dull.  They were originally polished, but across time and use they have lost their sheen.  I have no experience with onyx.  Does it polish like marble? Is it hard like granite? I haven't the slightest idea.  Any experience out there polishing this stone?
 
Stuart Young
Santa Fe Floor Care